<div id="form_enter">
  <form action="/php/form_enter.php" method="POST">
    <input type="text" class="form_enter_input" name="email" placeholder="E-mail">
    <br>
    <input type="text" class="form_enter_input" name="password" placeholder="Пароль">
    <br>
    <input type="submit" id="form_enter_submit" value="Войти">
  </form>
</div>